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This definitely looks like a workspace setup issue. The packages hector_mapping, hector_trajectory_server and hector_geotiff cannot be found by ROS's package utilities. You can verify this by trying

roscd hector_mapping

This command will very likely also fail. You'll have to make sure all packages can be found and are in one of the subfolders specified by the ROS_PACKAGE_PATHenvironment variable.

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